UMass Extension Turf Program: Management Updates > 2008 Archive

< Disclaimer >

For previous messages, browse the archive

You Are Here: Management Updates 2008 Archive September 30, 2008

Date: September 30, 2008
Category: Weeds
Subject: Fall Weed Management

At this time of the year, summer annual weeds such as crabgrass , spotted spurge and carpetweed are beginning to “melt away”. “Melting away” is a term I created to describe the slow decline of summer annuals in response to cooler weather and shorter days. At the same time cool-season grasses are actively growing and rebounding from stresses of summer.

Now is the time to scout for summer annual weeds and evaluate this season’s management program. Map and/or record problem areas and plan next year's control measures. Overseeding and/or fertilization can be used to fill openings or thinning in turf stands that have developed as a result of summer annual weed pressure.

With some areas already having received frost, weed control efforts should be focused on perennial and young winter annual broadleaf weeds. Broadleaf herbicide applications should be in full swing now. Fall applications, while not as fast acting as spring applications, will provide very effective control especially of difficult-to-control weeds such as violets and ground ivy . Products that contain dicamba and/or triclopyr should be used to control ground ivy and violets. For all applications the use of ester formulations of broadleaf herbicides would be preferred over amine formulations at this time. The additions of surfactant or spreader/stickers to broadleaf herbicide combination products can result in severe injury. Read and follow the product label.

Submitted by: Mr. Randall Prostak

DISCLAIMER - As always, it is the responsibility of the applicator to verify the registration status of any pesticide BEFORE applying it. Different states have different regulations as well. The author and the University of Massachusetts are not liable for any consequences of any pesticide "recommendations". Mention of any trade name is not to be considered endorsement of a product.

Links followed by the symbol are external links that open in a new window.

© Copyright 2000-2008 University of Massachusetts Amherst. Site Policies. This site is maintained by UMass Extension. UMass Extension is an equal opportunity provider and employer, United States Department of Agriculture cooperating.

If you are experiencing problems with this site, please .